I am uploading a NMU to DELAYED/10 in order to fix this.
The debdiff is attached.
diff -Nru libmad-0.15.1b/debian/changelog libmad-0.15.1b/debian/changelog
--- libmad-0.15.1b/debian/changelog 2024-03-23 20:36:40.000000000 +0000
+++ libmad-0.15.1b/debian/changelog 2024-03-23 20:30:30.000000000 +0000
@@ -1,3 +1,10 @@
+libmad (0.15.1b-10.2) unstable; urgency=medium
+
+ * Non-maintainer upload.
+ * Convert to source format 3.0. (Closes: #1007045)
+
+ -- Bastian Germann <b...@debian.org> Sat, 23 Mar 2024 20:30:30 +0000
+
libmad (0.15.1b-10.1) unstable; urgency=medium
* Non-maintainer upload.
diff -Nru libmad-0.15.1b/debian/control libmad-0.15.1b/debian/control
--- libmad-0.15.1b/debian/control 2024-03-23 20:36:40.000000000 +0000
+++ libmad-0.15.1b/debian/control 2024-03-23 20:29:43.000000000 +0000
@@ -1,7 +1,7 @@
Source: libmad
Priority: optional
Section: sound
-Build-Depends: debhelper (>= 8.1.3~), gettext, cdbs (>= 0.4.93~),
autotools-dev, quilt, dh-autoreconf
+Build-Depends: debhelper (>= 8.1.3~), gettext, cdbs (>= 0.4.93~),
autotools-dev, dh-autoreconf
Maintainer: Kurt Roeckx <k...@roeckx.be>
Standards-Version: 3.7.3
diff -Nru libmad-0.15.1b/debian/rules libmad-0.15.1b/debian/rules
--- libmad-0.15.1b/debian/rules 2024-03-23 20:36:40.000000000 +0000
+++ libmad-0.15.1b/debian/rules 2024-03-23 20:29:59.000000000 +0000
@@ -9,7 +9,6 @@
include /usr/share/dpkg/architecture.mk
include /usr/share/cdbs/1/rules/debhelper.mk
include /usr/share/cdbs/1/class/autotools.mk
-include /usr/share/cdbs/1/rules/patchsys-quilt.mk
include /usr/share/cdbs/1/rules/autoreconf.mk
export AUTOMAKE = automake --foreign
diff -Nru libmad-0.15.1b/debian/source/format
libmad-0.15.1b/debian/source/format
--- libmad-0.15.1b/debian/source/format 1970-01-01 00:00:00.000000000 +0000
+++ libmad-0.15.1b/debian/source/format 2024-03-23 20:29:26.000000000 +0000
@@ -0,0 +1 @@
+3.0 (quilt)
